BULL. U. S. B. F. 1912. 



PLATE LXXXVI. 



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KIG. 72. Massive thyroid tumors in wild Satnw sebago 4 years old, caught in Sebago I,ake. Maine. Largest fish 

 observed with tumors. Natural size. 



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FIG. 73. Smallest tumor fish, domesticated brook trout 5 months old. Natural size. 



